Abstract: This invention describes a set of building elements comprising a uniting plate (1) and a base plate (19). The uniting plate (1) comprises two plates (3) defined in a single plane, said two plates (3) are connected in a connection line (9), and a slot (5) is placed at said connection line; said slot (5) may engage with a slot on another uniting plate (1) to obtain uniting plates with their plates (3) in different planes. The base plate (19) being substantially planar having three parallel plates, which is placed in two planes, where the first (117) and third plate (119) is placed in one plane, are arranged on either side of the second plate (121), which is placed in the second plane, and where the two parallel planes define a space between the two planes to obtain one of the plates (3) of the uniting plate (1).

Abstract: This invention describes a set of building elements comprising a uniting plate (1) and a base plate (19). The uniting plate (1) comprises two plates (3) defined in a single plane, said two plates (3) are connected in a connection line (9), and a slot (5) is placed at said connection line; said slot (5) may engage with a slot on another uniting plate (1) to obtain uniting plates with their plates (3) in different planes. The base plate (19) being substantially planar having three parallel plates, which is placed in two planes, where the first (117) and third plate (119) is placed in one plane, are arranged on either side of the second plate (121), which is placed in the second plane, and where the two parallel planes define a space between the two planes to obtain one of the plates (3) of the uniting plate (1).

Abstract: A coupling element for releasable retention of an end of an elongate pull element has a cavity to receive said end. The pull element is formed with a constriction and the coupling element with a corresponding cavity. The pull element may be inserted unobstructedly and subsequently be locked by moving a movable portion, e.g. in the form of a hinged portion, into a locking position in which, in combination with the cavity, it establishes releasable locking of the pull element.

Abstract: constructional building set comprising gear boxes which are provided with guide grooves and shaft passages. The guide grooves and the shaft passages are constructed such that transmission elements can be inserted into the guide grooves from the outer side of the gear box in such a manner that the transmission elements are positioned in alignment with the shaft passages in the gear boxes. When the gear box additionally comprises means for releasable geometrical retention of the transmission elements in their position in alignment with the shaft passages after insertion of the transmission elements into the gear box, it is ensured that the shafts can be pulled out of the assembled gear structure without the transmission elements dropping out of the gear structure. This simplifies the mounting operation and makes it easier to use the gear structure as an assembled unit that can be used for different applications.

Abstract: A coupling mechanism comprises a rod-shaped object (10) and a coupling head (20, 30) and is adapted to be used in a toy building set containing various building elements with other types of coupling means, e.g. bushings or ball heads. The rod-shaped object (10) has at least one terminal part (12-15) adapted to be releasably engaged with the coupling head (20, 30). The terminal part (12-15) is adapted to be received between two resilient walls (27, 37) on the coupling head (20, 30). The coupling head (20, 30) has secondary coupling means (21, 31) for connection with other parts belonging to the toy building set.

Abstract: A toy gear box has two driven shafts which are rotationally tied to each other, and selectable gear wheel transmissions for transmitting rotational energy from driven shafts to a driving shaft, and claw clutches for selection of gear wheel transmission. Each of the driven shafts has a driving ring with guide grooves in positions opposite each other so that a gear lever can directly engage the guide grooves to axially displace the driving rings to engage claw clutches for selection of gear wheel transmission. The clutch parts of the claw clutch have claws which have a considerably smaller width than the gaps between the claws in the coupling region.